Alright so apparently I'm correct in that the skeleton is very likely a freshwater Cray and likely several thousand years young
but
It's not a fossil 'YET' needs a bit more time before it can be called a Fossil.
Anyhoo
I like it, looks cool & well preserved may also be laying on top of another dead critter but this isn't as clear
perhaps he was eating the other critter when a rock fell on him
Who knows; We could make up any ol' story as he aint giving away anymore secrets!
Cheers Big Ears!